2-48 Service Manual
7525-63x
4
1. Remove the imaging unit and waste toner
bottle.
2. Replace the right cover and close the front
door.
3. Enter the Diagnostics Menu (turn off the
printer, press and hold 3 and 6, turn on the
printer, and release the buttons when the
progress bar appears), and run the
appropriate cartridge drive motor test for
the missing color.
4. Navigate to MISC TESTS > Motor Detect.
Did the motor run?
Go to step 5. Replace the Main drive gear
assembly. See “Main drive
gear assembly with motor
removal” on page 4-57.
5
Remove the developer unit. See “Developer
unit removal” on page 4-47. Check the
developer cartridge contacts from the HVPS to
the IU.
Are all the toner cartridge contacts clean
on both the pin and IU?
Go to step 6. Clean the developer
cartridge contacts. See
“Developer unit removal”
on page 4-47.
6
Are all the spring-loaded pin in the HVPS free
to move in and out with an equal amount of
spring force?
Go to step 7. Replace the HVPS. See
“High-voltage power
supply (HVPS) with spring
assembly removal” on
page 4-40.
7
Turn the printer off, and remove the rear
shield. See “Rear shield removal” on
page 4-7. Check the continuity between the
spring-loaded pin and the JSC1 connector on
the RIP board.
Are all conductors continuous?
Go to step 8. Replace the cable.
8
Replace the printhead. See “Printhead
removal” on page 4-61.
Did this fix the problem?
Problem resolved. Replace the RIP board. See
“RIP board removal” on
page 4-19.
Step Questions / actions Yes No
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